I've migrated the app to iOS 9, and it works as usually, but there three log messages:
<Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
<Error>: CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
<Error>: CGContextRestoreGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Maybe helps that the next message from Crashlytics is:
[Crashlytics:Crash] Warning: iOS 9 workaround for binary image loading issue in place.
Does anybody know how to fix it?
This happens when there is a definition of UIViewControllerBasedStatusBarAppearance with false in info.plist.
If you don't need this you can set the key <key>UIViewControllerBasedStatusBarAppearance</key>
to true in the file manually or change View controller-based status bar appearance
option from Info to YES.
Also, I saw some posts that state there is no problem with this. As far as I know there's no way to set UIViewControllerBasedStatusBarAppearance from code, so I guess we'll have to wait until Apple will fix this issue. You can find more here.
Later Edit: It seems that iOS 9.1 solves this encountered errors. From last stable Xcode, running on iOS 9.1 result in no errors, while 9.0 still has the problems above.
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